Sliding-door latch



July 29, 1930. M LUSSE'TTO ET AL 137 633 SLID ING- DOOR LATCH Filed Oct.25, 192 2 Shets-Sheet l may gave/who's Jazzu'n ail l ass ezzo,

zmzzes fies 6T0,

'July 29, 1930. D, Lus's TTo ET AL 1,771,683

' SLIDING DOOR LATCH Filed Oct. 25, 1928 2 Sheets-Sheet 2- I V 1% i Jamz'azcz? if ass 6 IZQ, Q70??? as- 1 3 as are,

merited-Jul 29; 1930 Domitian Lussn'rro Ann- JAMES memo,OFOLS'I-IKOSHLNEBBASKAF snrnrne noon LATCH 1 Application filed October.25, 1928. Serial No- 315,011.

'lh'einvention relates to latch mechanisms iiorself-closing slidingdoors, and in the pres- :entdisclosure, the improved latch means is 1shown in connection with a safety bulletprootd'oor for bank cages,thedoor being hereinafter referred to" as a barrier.

' I-Ieretofore. latch mechanisms for holding self raising barriers inlowered position, have been very complicated and expensive j and haveusually entailed the provision of a number of parts above theyfloor. Itis, the

object of our invention however, to-p'rovide an exceptionally simple andinexpensive latch means which embodies no portions F above the floorexcept areleasing stud or studs to be foot-op'erated.

With the foregoing in View, the invention resides in the novel subjectmatter hereinafter described and claimed, description be ingaccomplished by reference to the accompanying drawings.

Fig. 1 is a vertical longitudinal sectional view on line v11 of Fig. 2.

Fig. 2 is a horizontal sectional View on line 2-2 of Fig. 1. Fig. 3 is aview similar to a portion of Fig.

1 but showing the barrier raised and the switch for the alarm closed.

Fig. 4 is a vertical transverse sectional View online 44 of Fig. 1.

.Fig. 5 is a View similar to Fig. 4 but showing the barrier raised.

Fig. 6 is a detail vertical section on line 66 of Fig.4.

An outer cage wall 7 is shown, embodying end p0sts-8, a lowerbullet-proof portion 9 and an upper openwork portion 10, the usual vcounter or the like 11 being behind this portion.

140 The posts 8 are provided with'longitudinal channels 12 and a.normally lowered, bulletproof barrier 13 is slidable at its ends inthese channels, its upper edge being normally about flush with thecounter 11. Coiled tension springs 14 are shown within the channels 12connected at theirlower ends with proj ec-'. tions 15 on the barrier 13while their upper ends areanchored, for instance, by adjustable anchors16.

ing 18 in the cage floor 19. Extending horizontally under this floor, isan elongated bar 20 having one end 21 which overlies the hook lT tohold" the barrier 18normally against ascent. This end of the bar isprovided with --wardly from the barrier 13 through an open- 24 which are disposed "underthe floor 19. Secured to andproj'ecting downwardlyfrom the other end of the bar2Qis a second arm 25 which is preferablytruly. vertical. The

. lower end of this arm isslidably received betw en he eam 4, a d a co lq pr s i .spr ng 26 surrounds SfLld arm between said beams and, the bar20, so as to normally hold theilattenin engagement with the hook 17.

The parts 27 shown. at the upper-and lower ends of the spring 26,. aremerely washers.

Th be m 4 are u a ly Spaced ap r t provide. a vertical guide-way for thearms 22 and'25 whereby said arms will be guided and [prevented from swinging laterally, in their .up and down movement between-thebeamS. j Atlongitudinally spaced points, the bar 20 is, provided. with upwardlyprojecting v studs "28 which pass through openings 29 in. the floor 19. Oneof these studs is under the counter 11 and; the other is preferably neara desk or table 30 within the cage. In case ofjdanger, ZI PBI'SQDIWlthlHthe cage may depr s either of he sm as andbysold in he,wil l swing thebar 20. to the positionof 5,]thus releasing it from engagement with thehook 17 and permitting-the springs rfthejlike 14 to immediately raisethe bullet proof barrier 13. ,9 i

P ef rably v i fik s a a e l e fie 31.1mm ih ibizeni g .1 o as i ti n ain the hook 17 with the end 21, of the bar 20,

.Wh e efth b rr r. a ain r d b g waf tlly from its raisedpositiona I yparts'aboveldee r bed, we. are iiil l t i ed s- ;w111 1:mw-. ;a aa ll esne l c ivn- By suitable ,wiring, this'a larm operatively con- A hook 17'is secured to and projects downf'nectediwith the upperpart pf In iconnection with j the the wall portion 10, and we have illustrated I aswitch plate 34 to bridgethe gap between these contacts when the barrier13 is raised as shown in Fig. 3. Thus, simultaneously with closing ofthe openwork wall portion 10, an alarm is sounded, with the intent offrightening, the thieves or .leading. to their arrest, as may bedesired.

Although the details disclosed, may be followed if desired, it is to beunderstood that within the scope of the invention'as claimed,

variations may be made. a We claim 1. In a latch meansfor holding asliding door depressed; a horizontally elongated bar beneath a floor andhaving one end to engage a door-carried member, an arm secured tosaid'barat said one end thereof and pro ecting downwardly therefrom,means plvotally mountingsaid arm for substantially horizontal swingingto effect substantially horizontal movement of said bar from engagementwith jthe dor ca'rried member, spring means a cting on' said bar'forholding it normally engaged with the door-carried member, and a V studprojecting upwardly from said bar "through the floor,'depression of saidstud by door depressed,a horizontally elongated bar foot serving toswing said bar and armabout the pivot of the latter to disengage saidbar from the door-carried member. 7

2. In a latch means for holding a sliding n-beneath'a floorand havingone end for 'en- I V gagement with a door-carried member, an

said stud by foot serving to swing said bar and pivoted arm about thepivot of the latter to disengage said bar from the door-carried member.

4'. In a latch means for holding a sliding doordepressed, a pair ofparallel horizontal arms being guided by said guideway to pre- -ventanylateral movement of the arms and the bar, a coiled compression springsurroundingsaid second arm for upwardly forcing said other end'of saidbar and holding said one end thereof engaged with the doorcarriedmember, the lower end of said spring abutting the upper edges of saidbeams, and

' areleasing stud projecting upwardly through the floorfrom the bar. a

In testimony whereof we have hereunto affixed our signatures.

DOMINIOK LUSSETTO. JAMES FASSERO.

' arm secured to said'barat said one end thereof and projectingdownwardly therefrom, I -means pivotally mounting-said arm'to'permitswinging movement of said bar from enspring means ac'tin'g on-saidbar'for holding it normally engaged with -the-door-carried gagemenfiwith the door-carried member,

- member, anda plurality of studs projecting I 'npwardly fromlongitudinally spaced portions' of said bar,

said studs extending through the'floor whereby depression of any stud byfoot will swing said bar and arm aboutthe pivot of the latter todisengage said bar from the door-carried member. 7 In a latch means forholdinga sliding door depressed, a horizontally elongated bar beneath afloor and having'one end to engage v a door-carrie d member, an armsecured to t F said bar at said one end thereofand project ingdownwardly therefrom, means pivotally mounting said arm toallow'swinging movement'of said bar from engagement'with the(1001C&1I1Gd member, a second armsecured downwardly therefrom, astationary guide for said second arm,a spri'n surroundingsaid second armfor upwardly. orcing saidother' j endoffsmd bar and holding saidonefendthereof engaged-(with the doorcarried mem.

Fbe'nanjd a releasing studprojecting upwardly to the, other end of saidbar and projecting fromsaid'b'ar through the floor, depressio'n'of'

